Home / 7,322.36-10,985.81-2,128.23

Finding the Fourth Proportional to 7,322.36, 10,985.81 and 2,128.23

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Solution

The fourth proportional to 7,322.36, 10,985.81 and 2,128.23 is: 3,193.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,322.36 : 10,985.81 = 2,128.23 : x
  2. Step 2: Convert to fraction form
    7,322.36/10,985.81 = 2,128.23/x
  3. Step 3: Cross multiply
    7,322.36x = 10,985.81 × 2,128.23
  4. Step 4: Simplify right side
    7,322.36x = 23,380,319.78
  5. Step 5: Solve for x
    x = 23,380,319.78/7,322.36
  6. Step 6: Final answer
    x = 3,193.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.